A leader who truly loves his nation and wishes to help its people to get out of the life-circle of poverty and violence they live in, but unfortunately there are too many extremistic motherfuckers who stand behind his back with a gun and do not allow him do anything.

1) Abu-Mazen was the leader of the Palestinian autonomy since the death of Arafat (may his soul burn in hell forever, amen). He led the disarm of the "Organisation for Freedom of Palestine", and negotiations with Israel.
When Hamas took over the government in the Palestinian autonomy, Abu Mazen lost most of his power. The Hamas broke the negotiations, denied Israel's agreements with the previous government of Palestine, and renewed terrorism against Israel, destorying everything Abu-Mazen worked so hard to achive.

2) If there were less extremists, and more leaders like Abu-Mazen in the Arab world, there would have been more chances to have peace in the Middle-East.